Electric joint solderer



Aug. 27, 1940. c. J. SAMPSON ELECTRIC JOINT SOLDERE'R Filed March 16,1939 ZyaZe J Jam 0502a,

ATTORN EYS WITNESS Patented Aug. 27, 1940 PATENT QFFECE ELECTRIC J OIN TSOLDERER Clyde John Sampson, Retreat, Pa.

Application March 16,

4 Claims.

This invention relates to new and useful improvements in heating devicesgenerally, although more particularly to electric melting pots forsubstances having relatively low melting pointssuch as ordinary solder.

The principal object of my invention is to provide'an electricallyheated melting pot to be used .in soldering the ends of electricalconduc tors. e

Another object of my invention is to provide a device of theabovecharacter' which will ret'ain a-relatively large amount of heat fora maximum time. I

Another object of my invention is to provide a d'e'vic'e of the abovecharacter which is simple in construction and economical to manufacture.

With these and other objects in view which will more fully appear, thenature of the invention will be more clearly understood by following thedescription, the appended claims, and the several views illustrated inthe accompanying drawing.

In the drawing:

Figure 1 is a vertical section of a heating device constructed inaccordance with my invention,

Figure 2 is a top plan view thereof,

Figure 3 is a horizontal section taken on line 33 of Figure 1, and

Figure 4 is a bottom plan view of the covering sleeve.

Like reference numerals designate corresponding parts throughout theseveral figures of the drawing.

Referring to the drawing in detail, my invention includes a support 5,an electrical socket 6 secured thereto, a heating element 1 mounted inthe socket, and a handle 8 secured to the support.

The support 5 is preferably a standard octag- 40 onal electrical outletbox and includes a top 9 provided with an opening Ill, a bottom II, andsides I 2.

The socket 6, which is preferably of the standard screw-base type, issecured on top of the support by the bolts 13, I3. The socket includes abase l4 made of non-conducting material, such as porcelain, but has itsbase shell enclosed in a removable open ended porcelain sleeve IS, thesleeve being interiorly threaded to engage the exterior threads on thesleeve. The upper surface of the base forms a stationary clamping deviceof which the complemental removable element is the sleeve IS.

The heating element 1 is vertically disposed and is threadably engagedin the socket 6 and 1938, Serial No. 6,283

includes a core i! of porcelain or analogous material, a metallic screwplug base l8, and a coil E9 of resistance wire disposed around the coreand having its ends attached to the plug base I8 in the usual manner.The core ii is provided with an axially disposed cylindrical recess 28extending downwardly from the upper end thereof. The lower half of therecess is filled with heat resistant material, such as asbestos plaster.

A frusto-conical covering sleeve 2| of sheet metal surrounds the heatingelement and is spaced therefrom, the sleeve being provided at its lowerend with a plurality of inwardly bent ears 22. These ears are locatedbetween the lower end of the sleeve l6 and base [4 and clampedtherebetween. The space between the heating element and the coveringsleeve is filled with insulating material 23 such as asbestos to assistin retaining heat in the device when in use.

When the device is to be used, electricity is brought to the heatingelement from a source of power through the medium of an electrical plug24 mounted on the support and connected to the socket 6 by leads 25, 25in the usual manner. Solder 26 is then inserted in the recess 20 of theheating element and then melted. The joined ends of the conductors whichare to be soldered, are then immersed in the melted solder and thenwithdrawn therefrom whereby the joint Will be evenly coated with solder.

The handle 8 is resilient in its action to provide a means whereby thedevice may be easily and conveniently clamped to any desirablesupporting structure to hold the same in close proximity to the work.

Thus it will be seen that I have constructed an electrically heatedmelting pot for soldering joints in electrical conductors which is heatretentive and which is simple in construction and economical tomanufacture.

It is of course to be understood that the details of structure andarrangement of parts may be variously changed and modified withoutdeparting from the spirit and scope of my invention.

I claim:

1. An electric heating device comprising the combination of a support,an electrical socket mounted on top of the support and including a baseof non-conducting material and a metallic shell upstanding therefrom andshaped to provide both interior and exterior threads, an internallythreaded sleeve removably engaging the exterior threads of the shell andhaving its lower 2. An electric heating device comprising th Vcombination of a base member, an electrical contact carried by said basemember including an insulated base and vertically disposed screwthreaded socket, a heating element including a resistance coilterminating at one end in a plug threadedly received within said socket,a receptacle positioned within said resistance coil and opening throughone end thereof, an external shell, insulated from and enclosing thecoil, said shell being formed at its upper end with an openingregisterable with the open end of the receptacle and at its bottom endwith an inwardly extending annular flange engaging the insulated basecircumjacent to the socket, and a sleeve threadedly received exteriorlyof the said socket and engaging the annular flange of the said 3. Anelectric heating device comprising the combination of a base member, anelectrical contact carried by said base member including an insulatedbase and vertically disposed screw threaded socket, a heating elementincluding a resistance coil and a plug threadedly engaged within saidsocket, a receptacle positioned within said resistance coil and openingthrough the end thereof remote from the said plug, an exterior coverinsulated from and enclosing the coil and formed with an openingregistering with the opening in the receptacle, said cover being formedat its bottom end with an inwardly extending annular flange, a sleevethreadedly received exteriorly of the said socket and engaging theannular flange of the said cover to hold the same against displacement,and handle means secured to the said insulated base.

4. An electric heating device comprising the combination of, anelectrical contact including an insulated base and vertically disposedscrew threaded socket, a heating element including a resistance coil oneend of which terminates in a plug threadedly engaged within said socket,a receptacle positioned within said resistance coil and opening throughthe end thereof remote from the said plug, an exterior cover thermallyand electrically insulated from and enclosing the coil and formed at oneend with an opening registering with the open end of the receptacle andvat its other end with an inwardly extending annular flange bearingagainst the base circumjacent to the said socket, a sleeve threadedlyreceived exteriorly of the said socket and engaging. the annular flangeof the said cover to hold the same against displacement, and meanscarried by the said insulatedbase to permit they said heating device tobe detachably secured to any suitable support. CLYDE JOHN SAMPSON.

